[Rwp] different driver modes in reaper

Tue Apr 19 08:12:09 EDT 2016

Ok if no one minds the continuing soga of sound card exploration, I have 
another bit to add to the growing experiment with reaper.
My old UA1 from back in the 90s a class compliant
edirol device works gang busters with exclusive mode wasapi polled 
version, so I think as long as you have any other device that speech can 
go to, you'll be able to use most any class compliant device in this 
mode and get super low latency.
The UA1 only supports 44.1 and 16 bit, what's nice about it is that if 
you pick a wrong sampling rate or bit depth the driver will error out 
and not let you do that.
So, my fine steinberg with the nice prees, way nicer than the audiobox USB
won't play really nice with reaper under windows 10 but all the cheap 
stuff does. meh.
Maybe steinberg will fix up their drivers, the trouble is I think the 
key factor here is being class compliant
thatseems to be the common factor so far with working super well with 
exclusive mode and polled.
since many devices now are being made to work with iOS,
and even if they support asio, they have a class compliant mode,
then anything like that will probably rock and roll with wasapi 
exclusive mode.
I havge just one more device to check out a little via USB dongle I'll 
report back how it acts.

On 4/19/2016 6:24 AM, Chris Belle wrote:
> Well wonders will never cease again.
> The audiobox USB is the big winner here with wasapi in exclusive 
> polled mode.
>
> Wit aASIO if I go below 256 I get crackling and the steinberg which 
> technically has the better hardware and is pretty much a better 
> interface since it support 192 khz but I guess they've got this class 
> compliant stuff down to a tea now because I can set the presonus down 
> to 32 buffers and it rocks feels just like hardware like I was playing 
> my digital piano with no drop-outs or crackling and such.
> Very impressive for an inexpensive  USB device,
> but I guess that polling allows
> it to flip flop that USB and share bandwidth, have to go read about that.
> USB 2 is not by-directional natively,
> but going in to that polled mode really turned on the gas.
> Now I can run the steinberg in wasapi mode but only in the shared 
> modes, and it's sluggish, like wasapi used to be.
> I don't think sonar has access to the polled and exclusive modes like 
> reaper does it's just a generic wasapi mode.
> Poor old primitive sonar, but I still love her, she's still queen of 
> midi.
> But I'm just not believing the kind of performance I'm getting from 
> USB with wasapi exclusive polled mode I didn't think this was possible 
> with USB.
> Well,
> Gianluca,
> if you're monitoring this thread are you running your delta card with 
> ASIO or wasapi to get your good performance?
>
>
> On 4/18/2016 12:12 PM, Patrick Perdue wrote:
>> WASAPI under Windows 7 is interesting. It works great with extremely 
>> low latency with some devices, completely not at all with others, 
>> even on the same system. True, it is much more reliable on Windows 
>> 10, but... well... still not sure I like Windows 10 in general. I 
>> have it on a "don't care" tablet and a virtual machine to play with 
>> for now, but, the time for buying a new DAW is at hand, and Sky Lake 
>> processors will soon lose the ability to run fully patched Windows 7, 
>> and Katy Lake won't run Windows 7 at all, so I guess I'll have to 
>> give in at some point... BLEH!
>>
>> Yep, it's like XP all over again. I know this thing to be true.
>>
>> On 4/18/2016 1:03 PM, Chris Belle wrote:
>>> Well wonders will never cease.
>>> I think with windows 10 we've finally got something approaching note I
>>> said approaching core audio low latency with junky internal devices.
>>> Just took wasapi for a spin,
>>> and it works better on this machine than my nice steinberg interface, I
>>> think I'm going to go sit in the corner and cry, ha.
>>> But serious now, this is great, it means you can now do casual things
>>> with the onboard hardware and work at low latencies, and that's not a
>>> reason to be trying to do all yourstudio stuff like that because plenty
>>> of reasons not to record with those little 8th inch jacks for pro stuf,
>>> and the internal realtech device is hardy a pro device, but mixing on
>>> the bus, or throwing together some casual midi tracks, this will 
>>> make it
>>> nicer to do such things in windows.
>>> finally,
>>> wasapi was in windows 7 but it had lots of latency.
>>> so I didn't solve my problem yet, but I did get a couple candy drops 
>>> for
>>> upgrading to windows 10 so hey,
>>> hurray for wasapi how ever far it get's us.
>>> Now I'm really curious since I think these realtech cards will actually
>>> support up to 96k and 24 bit if it will actualy record like that does
>>> reaper give a round trip latency like sonar does anyplace?
>>> somewhere in the audio device
>>> dialogue?
>>> It says 0 latency in there when you are setting your buffer size, 
>>> but it
>>> can'treally be that.
>>> There's always some since any audio system is a buffered system.
>>> but I took out everything and it keeps putting 32 back in there.
>>> so if we're really getting 32 buffers under wasapi,
>>> and if it's buffered similar to asio that's prety impressive for a
>>> garden variety internal card.
>>> Don't make the mistake like I did of picking exclusive mode, and
>>> especially if you only have one sound card in the system,
>>> your speech will go away and you might have to do sumersaults to get it
>>> back.
>>> Luckily, I have lots of devices around here, every blindy needs to keep
>>> around some class compliant devices for this sort of issue,
>>> I pulled a good one the other day I was gonna disable the intel sound
>>> for the
>>> high definition audio that comes on most display chips these days, you
>>> don't need it and it's best not to be taking up resources with an audio
>>> driver you'll probably never use.
>>> But I got in a hurry and disabled the main sound card on my wife's 
>>> laptop,
>>> so luckily I got speech going again with good old narrator and a thumb
>>> drive like class compliant USB sound card.
>>> anything will work, like logitech headphones, or USB speakers, so long
>>> as they're class compliant.
>>> Well, fun times again.
>>>
>>>
>>> On 4/18/2016 11:19 AM, Chris Belle wrote:
>>>> Well, I tried out another USB interface I have here, and also the
>>>> steinberg in sonar, and well, I think that for what ever reason, the
>>>> audio system on this machine is dogging down in windows 10.
>>>> How ever, on my explorations, I've discovered somem interesting 
>>>> things.
>>>> I didn't think reaper really supported wdm as an option,
>>>> but when I was testing the presonus audiobox USB, it showed up, and lo
>>>> and behold, it works like sonar does with class compliant devices now,
>>>> and
>>>> you're able to change buffer sizes and such in a really accessible 
>>>> way.
>>>> Now wdm I think with class compliant devices is usually limited to
>>>> 44.1 or 48k depending, and 16 bit, so I usually don't bother with it
>>>> you get better results with asio anyway,
>>>> and it's usually more stable, and generally a more professional
>>>> system, but it's nice to see that reaper now allows this sort of
>>>> support for other driver modes.
>>>> Just for giggles, I'm going to see if it shows up for the internal 
>>>> card.
>>>> The other reason I'm interested in this generic mode of wdm is that
>>>> the asio pannel in the audiobox USB didn't show a thing with NVDA so
>>>> I'm going to have to try it with another screen reader,
>>>> because I can't change a thing in there, and  it's set to some
>>>> ridiculously relaxed place llike 512 or 1024 from the way it acts.
>>>> Fun times.
>>>>
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